Measuring Continuity; Measuring Loop/Line Impedance - Beha-Amprobe Telaris Série Guide D'utilisation

Measuring Continuity

Figure 10. Continuity Zero Display/Switch and Terminal Settings
A continuity test is used to verify the integrity of connections by making a high resolution
resistance measurement. This is especially important for checking Protective Earth
connections.
Note: In countries where electrical circuits are laid out in a ring, it is recommended that you
make an end-to-end check of the ring at the electrical panel.
WWarning
• Measurements should only be performed on de-energized circuits.
• Measurements may be adversely affected by impedances or parallel circuits or transient
currents.
To measure continuity:
1. Turn the rotary switch to the RLO position.
2. Use the L and PE (red and green) terminals for this test.
3. Before making a continuity test, short connect the test leads. Press and hold F3 until the
comp annunciator appears. The tester measures probe resistance, stores the reading
in memory, and subtracts it from readings. The resistance value is saved even when
power is turned off so you don't need to repeat the operation every time you use the
instrument.
Note: Be sure the batteries are in good charge condition before you compensate the
test leads.
4. Press and hold
tester beeps continuously for measured values less than 2 Ω and there is no stable
reading beep for measured values greater than 2 Ω. If a circuit is live, the test is
inhibited and the AC voltage appears in the secondary (lower) display.

Measuring Loop/Line Impedance

Figure 11. Loop/Line Impedance/Switch and Terminal Settings
until the reading settles. If the continuity beeper is enabled, the
R
LO
11